Speed-recorder.



A. H. MARTIN.

SPEED RECORDER.

APPLICATION FILED muso. 19:2. RENEWED APR. 13.1915.

1 1 60,633 Patented Nov. 16, 1915.

2 SHEETS-SHEET l.

WITNESSES: INVENTOR.

W WWW W 74 A y/299%;

ATTORN EY5.

COLUMBIA PLANOGRAPH CORWASHINM'ON. D c.

A. H. MARTIN.

SPEED RECORDER.

APPLICATION FILED muso, 1912. RENEWED APR. 13, i915- 1,160,633, Patented Nov. 16, 1915.

2 SHEETSSHEET 2.

WITNESSES:

coLuMluA I'LANOGRAPII to WASHINGTON. u, c.

ATTORNEYS UNITED STATES PATENT OFFICE.

AUBREY H. MARTIN, 0F SHORT HILLS, NEw ERsEY, ASSIGNOR TO JAMES E. BROWN, 0]? NEWARK, NEW JERSEY.

SPEED-RECORDER.

7 Specification of Letters Patent.

Patented Nov..16, 1915.

Application filed January so, 191:, Serial in. 674,342. Renewed April 1a, 1915. Serial No. 21,145.

To all whom it may concern Be it known that I, AnnREr H. MARTIN, a citizen of the United States, residing at Short Hills, county of Essex, State of New Jersey, have invented certain new and usean Improvements in Speed-Recorders; and I do hereby declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to makiand use the same; I Mv invention relates to certain new and useful improvements in speed recorders, and embodies a construction wherein the re cording member, or stylus, is adapted to be moved back and forth automatically by mechanism actuated from a v'ehi'cle or the like, and cooperating. with a paper strip or tape, which is fed in predetermined 'amoiints past the stylus by means of aclo'ckl k m cha ma. V a The tape-feeding device{consists of a supply receptacle for the tape, "a roll adapted, as i't is revoli ed, towind the tape fromthe supply device, a knurled disk or idler, together with means for maintaining the roll. and conseduehtly the tape, in operative reutioa a) the disk or idler, so that the disk or idler will feed a, predetermined amount dftare Pen "th bl .6 a.

n the accompanying drawings, Figure 1 represents, elevation, at f'speed recorder embodyingmy improvements, Fig. 2 represents a side View thereof, partlv in sec tion, on the line 2-2 of Fig. 1; Fig, 3 repr'esehts a sectional plan view on the line of 1,; Fig. 4 represents a detail "Ian yiew o'n the line of Fig lj and ig. "5 represents atop plan View show ng a modification of the mechanism for feeding the, paper strip.

Similar numeralsof reference indicate similar parts throughoutthe several views. Referring to the drawings, indicates the supply-case, in wl'iich th'e paper strip or tape v3 is stored in any convehient inanner, said supply-case preferably consisting of upper and lower plates, as show'n, connected ,byposts or columns and having a circumferential rail or wire joining the colui'nnfs. The supply-case is f'urth'er ,prosided with a hollow central sleeve 4 wherey a is weed t ele free we h post 5. The steely-ease is saaabiyaagaaged upon the table 6 of the frame 7 whdse base 8 is designed for attachment to the nu tomohile or other vehicle whose speed is to be recorded.

2 indicates a take-up roll for the paper strip or tape 3. The take-up roll is adapt-- ed to rotate freely upon the fixed central post 9 which post is mounted in a cross-head 10. The cross-head 10 carries two rods 11 which pass through guide apertures in the flanges 12, 13 of the table 6. A tension sprlng 14 joining a pin 15 on the slide 10 with a similar pin on the table 6 solicits the take-up roll 2 in a direction toward the supply-case 1 and maintains the paper strip or tape 3 as it is wound upon the take-up roll in constant, though yielding engagement with the knurled or toothed disk 16.

The knurled or toothed disk 16 is carried by a shaft which is provided at its lower end with a pinion 17 in engagement with a crown-wheel 18, which latter is mounted upon the main spring shaft of a clock-work mechanism 19 of any suitable kind. The main spring shaft of the clock-work mechanism is provided with a bevel gear 26 engaging with a bevel gear 27 which latter is mounted on the winding post 28, so that by applying a suitable key to the squared top 29 of the winding shaft, the main spring of the clockwork mechanism can be wound up.

The paper strip or tape 3 is sub-divided into gradations indicating hours and minutes of the.day, andbythe mechanism described is adapted to be wound from the supply-case in predetermined amounts for equal units oftime, and stored upon the take-up roll 2. In passing from the storage case to the take-up roll, the tape passes over a flat table 20, preferably of sheet inetal, having H during a single revolution ofthe disk may v be varied. Cooperating with the paper strip or tape is a pencil or stylus 22 which is carried iii a holder 24 mounted on tlie rod between collars thereon. The stylus 22 is held in 'spring engageinehtwith the paper strip 3, its holder being free to ever hpon the rod 23 for that purpose. The rod 23 is movable up and down in bearings in the frame 7. At its lower end, the rod 23 is provided with a friction roller 30 which rides upon a heartshaped cam 31. The cam 31 is mounted to rotate freely upon a fixed studshaft 32 and is rigidly connected with a worm-wheel The wormwheel engages a wormshaft 35 whose shaft 36 is adapted to be operated by any suitable intermediate connections from the traction wheels of the vehicle.

A spring 37 reacting between the lower surface of the table 6 and a fixed lug or collar38 tends to hold the idle roller 30 in constant engagement with the periphery of the heart-shaped cam, but permits the rod to rise as the heart-shaped cam rotates. The lug or collar 38 is provided with an upright 39 and is itself guided upon a guide-rod 40, so that it is adapted to move upwardly with the rod as the heart-shaped cam revolves. In its-upward travel, the lug or collar 38 carries with it the actuating lever 11 of any suitable counting device 42, and, in the downward movement of the lug or collar 38, a pin 13 thereon returns the actuating lever to its initial position at the hollow ofthe heartshaped cam, that is, the position indicated in Fig. 1 of the drawings. The mechanism is so calculated that the stylus is reciprocated back and forth across the paper strip or tape 3 once for each recorded unit on the counter. the carrying of each next succeedingunit being effected at a completion of the down-stroke of the sliding rod 23. Conseouently. according to the speed of travel of the vehicle, a line will be traced across the face of the paper strip as indicated in Fig.

' by the vehicle. thereby measuring the speed of travel of the vehicle per unit of time.

In the modification indicated in Fig. 5. the paper strip 3 is shown as driven by an idler l4 interposed between the disk lfiand the paper strip. and driven by the disk, whose teeth are suitably formed for the purpose. The idler 44 will be of particular use in those instances where a considerable amount of paper tape is wound upon the take-up roll. In such case, the idler being of. relatively small diameter, will have a more effective driving action than would be the case if it Within a locked casing, accessible only to an authorized person having a key, and to surround the entire mechanism below said table 6 with a casing having no key but whose bottom will be constituted by the base 8, the

I frame being secured to the lower casing, by

means accessible only after the upper casing is unlocked. By this arrangement, it is impossible for any one not provided with a key to obtain access to any portion of the mechanism; but a person provided with a key may open the upper casing and may then remove the entire mechanism by permitting it to slip downwardly through the main casing.

Having thus described my invention what I claim is: Y

1. A speed recorder for recording the movements of a stylus, or other like member driven automatically from a vehicle, including a device for feeding a paper strip or tape in-predetermined amounts past said member and a clock-work for operating the tape-feeding device, said tape-feeding device consisting of a supplv receptacle for the tape, a take-up roll adapted, as it revolves, towind the tape thereon. and a driving disk provided on its periphery with a surface adapted to grip the tape, guide rods connected to the take-up roll and passing through suitable guide apertures in the supporting frame-work of the speed recorder, and a spring soliciting the take-up roll toward the disk; substantially as described.

2. A speed recorder for recording the mo ements ofa stylus or other like member driven automatically from a vehicle, including a device for feeding a paper strip in predetermined amounts past said member and a clock-work for operating the tape-feeding device, said tape-feeding device consisting of a supply receptacle for the tape, a takeup roll adapted, as it revolves, to wind the tape thereon, a disk provided on its pe riphery with a surface adapted to grip the tape, the driving shaft for said disk being driven directly from a gear on the main spring shaft of the clock-work, and means for maintaining the take-up roll and the tape thereon in operative relation with the said disk; substantially as described.

3. A speed recorder for recording the movements of a stylus driven automatically from a vehicle, including a device for feeding a paper strip or tape in predetermined amounts past said stylus, a reciprocating rod upon which the stylus is mounted, a heart-shaped cam upon whose periphery the reciprocating rod rests, a spring for holding the rod in contact with the periphery of the cam, an arm carried by the rod and moving therewith, and a counting mechanism provided with a lever actuated by the arm carried by the rod; substantially as described.

4. A speed recorder for recording the movement of a stylus or other like member driven automatically from a vehicle, including a device for feeding a paper strip or tape in predetermined amounts past said member, and a clock-Work for operating the tape-feeding device, a frame provided at its upper part with posts upon'which the tapefeeding device is removably mounted, a clock-Work for operating the tape-feeding device, cam-actuated mechanism for operating the stylus, and a counter having an actuating lever in the path of movement of the stylus-operating mechanism; substantially as described.

5. A speed recording instrument comprising the combination of a support, a shaft mounted for rotation therein, a cam geared to said shaft and rotated thereby, a rod mounted on the support and reciprocated axially by the cam, a counter actuated by the rod, a marker mounted on the rod, tapesupporting devices for supporting the tape in cooperative relation to said marker, tapefeeding mechanism and a clock mechanism for operating the tape-feeding mechanism; substantially as described.

6. A speed recording instrument comprising the combination of a support, a shaft mounted for rotation therein, a rod mounted on the support parallel to said shaft and adapted to be reciprocated, a cam upon which the the end of the rod bears, a shaft transverse to said shaft on which the cam is mounted, gearing connecting said shafts, a counter, means on said rod for actuating the counter, a marker mounted on the rod, tapesupporting devices for supporting a tape in cooperative relation to the marker, tapefeeding mechanism and a clock mechanism for actuating the tape-feeding mechanism; substantially as described In testimony whereof I affix my signature, in presence of two witnesses.

AUBREY H. MARTIN.

Vitnesses:

JOHN C. PENNIE, MINERVA LOBEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

